Calosoma affine

Chaudoir, 1843

related beautiful black searcher

Calosoma affine is a of ground beetle in the Carabinae, described by Maximilien Chaudoir in 1843. It is one of the so-called "caterpillar hunters," large predatory beetles known for ascending trees to feed on caterpillars. The species occurs in Mexico and the southern United States, where are active both day and night and exhibit gregarious .

Calosoma affine ASUHIC0045413 L by Arizona State University Hasbrouck Insect Collection. Used under a CC0 license.

Calosoma affine ASUHIC0045413 D by Arizona State University Hasbrouck Insect Collection. Used under a CC0 license.

Pronunciation

How to pronounce Calosoma affine: /ˈkal.oˌso.ma aˈfi.ne/

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Images

Habitat

Inhabits pastures, cultivated fields, and sand dunes. Based on related in the Calosoma, likely associated with open or semi-open where caterpillars are abundant.

Distribution

Mexico and the southern United States.

Diet

Preys on lepidopterous caterpillars.

Behavior

are and and gregarious. Like other Calosoma , has been observed ascending vegetation to hunt caterpillars.

Ecological Role

of caterpillars, potentially providing of lepidopteran in agricultural and natural settings.

Human Relevance

May contribute to natural pest control in pastures and cultivated fields. No known negative impacts to humans.

Similar Taxa

Calosoma sayiBoth are black, non-metallic Calosoma in the same geographic region, but C. sayi is generally larger with more pronounced mandibular sculpturing.
Calosoma scrutatorSimilar arboreal caterpillar-hunting , but C. scrutator exhibits distinctive green and purple metallic coloration rather than black coloration.
Calosoma wilcoxiSimilar size and black coloration, but C. wilcoxi is smaller (about one-third the size of C. scrutator) and may show subtle differences in structure.

More Details

Taxonomic note

Calosoma affine belongs to the nominate Carabinae, a group that includes some of the largest ground beetles. This subfamily is closely related to tiger beetles (Cicindelinae), with molecular data suggesting tiger beetles are nested within Carabinae.

Etymology

The specific epithet "affine" is Latin for "related" or "bordering," likely referring to its close relationship to other in the .